Packing



l l1,616,596 Fleb. 8, 1927- A G, PlcKE-r l l PACKING i Filed Oct. 1o. 1923 j 773 i 'ff/f W5@ @QZ/,ghi

" @wenz/0%' able and satisfactory for use wherever found f Patented Feb. 8, 1927.,

' ,narran stares relates rarest series.

.A.' GLENN PICKETT, OF CHICAGO, ILLINOIS, ASSIGNB T0 CHICAS-G METALLIC PACK- ING COMPANY, 0F CHICAGO, ILLINOIS, A CGR-PRA'IICN OF ILLINOIS.

PACKING.

rApplication filed OctoberlO, 1323. Serial No. 667,702.

y My invention belongs to that general class of devices known as packing and relates more particularly to a metallic packing made up of metallic rings combined with cooperating rings or Vcups of suitable material.

rIhe invention has among its objects thev production of a packing of the lkind described that 1s simple` durable` efficient, reliapplicable. It has particularly as anobject the production'of an improved packing which will, be vleak-proof in'nnediately upon installation, without requiring more or less time to beworn in so that the metal elements seat perfectly on the rod. The same is particularly designed for use on reciprocating rods, although it is applicable on rotating rods Vas well. The same also'has as an object'the production of a packing which may be efficiently applied by one not particularly skilled in packing stuiiing boXes and yet which vwill operate satisfactorily from thetime of installation. It has also as its object the production of a packing which although tight and leak-proof, will be as frictionless as possiblevso as to avoid 'drag on the rod, particularly when going inthe opposite direction to the power stroke. Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art'V Fig 1 is a sectional view througha stufting box showing my improved packing apv plied thereto Fig. 2 is a sectional view substantially illustrating a portion of the same;

Fig.- Sis a perspective view of one of the metallic rings;

Fig. 4 is a planl view of one of the backing cups; and Y Fig. 5 is a perspective' view of a portion of a metallic ring illustrating a slight modification.

Referring to the drawings, 1 represents a metal ring constituting a wear member of suitable metal1 preferably a bearing metal sired size and preferably in a plurality of sections. As shown in Figs. 1 and 3, t-he ring` sections are connected together, as indicated at 2, by thin sections of the bearing metal. TheseY sections should be of such thickness or size aste permit the contraction Y and` seating of the vring` when applied 'to therod. In Fig. 5V. I have illustrated how the sections 1 may be connected by soft wires 2 which are insert-ed when the rings are cast, the ends being preferably imbedded 1n the ring sections.

The purpose of connecting members is to hold the several sections in place relative.

each other during the application of the As shown, I prerings to the stuliing box. fer to make the rings with a substantially curved side 3 opposite the internal wall 4 whichis of a contourto fit the rod;4 One side is made fiat. as indicated at 5, and I also prefer to provide a portion of the opposite side flat, as indicated at 6. or reduce the curvature so that vitis substantially fiat.

lVhile this is not essential. yet I generally' make the same in this manner.

There are also provided the desired number of cups 7. which cups may be made of rubber or rubber composition, pla-in asbestos or asbestos with inserts. Vor combinations of asbestos and rubber, asbestos duck and' rub` ber. plain duck and rubber, cloth and rubber, leather, jute,a flax with or without rubber,

or such other material as maybe found satisi factoryl for lthe purpose, and which may be more or less yielding and semi-resilient when.

compressed, or in the case of rubber. elastic The same as well as yielding and'resilient. is preferably constructed with the face 9 corresponding with the face 3 of the metal ring or concaved. with the flat face 10 corresponding with the face 6, with the face 8v which is substantially flat, and with the face 12 which will cooperate with the fac'e5` of the metal Aring and .the'adjacen't face Sof the adjacent cup. The bore or inner face 11 is substantially the same diameter as the rod.

I have illustrated in Fig. 1 al shaft 15, stutling box 16 and gland 17. The several metallic rings and cups may be arranged in the stuffing box as desired, the arrangement, however, being preferably Vsuch that there will be a cup 7 at both extreme ends of the stufng boX with the intermediate rings 'and cups turned in the desired manner.

Y 'j bei' and'metal rings are'brouglit into contact` with the rod. y Y Y .tions between the sections, the rings easily Vv1o j tacting metal ring.

,155 ting the metallic connectors or the cups. Oi

b lea inachinei for tne purpose of repackino,

Then the cups and'rings are applied, the rubber isV in Contact with VtheV rod, while the'ring may possibly be slightly separated prior toits contraction-- l/Jhen the gland 17 is tightened down, however, both the` rub- Owing to the flexible connec- `coursewhere,it is'n'ot desired to'disasseniinfthat case he'connectors 2 or 2 at one sideof the ring are broken or cut so as to "permit the ring to be opened up and the cup Y i'ssevered at one point so as to permit that being opened up and positioned on the rod.

Howeveig when the ends ot the cup at theY :several points are brought together, to all intents and purposes the saine is a continuous ring, as the saine isr molded or produced soy as to closely tit the rod. 4

I particularly desire to so construct the cupsthatlthey bear `on the rod, particularly fromj the time of application. In this man- Y se.

ner lleakage past the packing either along the rod or along the walls of the packing box vbefore Yor after the metal rings have completely worn into a perfect seat is prevented. This is particularly desirable and importantvfin the case ofpacking machines A where gases or fumes may be given ofi' due `to leakage, as for example, on the rod `of an There are many `other places where such leakage is undesirable,

ammonia machine.

`where the leakage of steam or water would not be so important.- When the gland isV tightened down the metallic rings are brought into close contact with the rod and the vcups in contact not only with the rings Y, and rod, `but with the wallsof the stutng box and gland.

ci It will be noted by referring particularly Vto Figs; l and 2 that ,If generally prefer to so design the` cups and rings that there is a small space between. the walls 6 and 8.

,This allows a certain amount of play of Athe v extreme inner edge ofthe cup between thef face 6 of one ring'and 5 of the adjacent rino'. As the rod reciprocates .back and forth on the power stroke, the part will seat l tightly against face 5 and the ro'd, while Vupon movement oit the rod in the reverse direction, the same may yield without putting any amount of friction on'the rod, at the saine time wiping the rod and keeping it in good conditions This, ofcourse, not

Having thus vdescribed my invention, it'A is Vobvious that various immaterial modifications may be made in the y'same without departing from the spiritof my invention; hence I do not wish. to Lbe VunderstoodV as limiting myself to the exact form, construction, arrangement and combination of parts herein shown anddescribed, or uses mentioned. Vilhat I claiin as new and desire tosecure by Letters Patent is: Y l y 1'. In combination with a reciprocatory rod, a stutlingbox about said rod, a packing betweenv said vbox and rod and comprising rubber cups, each having a substantially thin flanged part engaging said rod, and Vmetal rings between the 'adjacent cups and fitting thereinto, said rings spaced from said cupV at Vsaid lianged portion to provide a clearance thereat, whereby said flanged portions may be flexed axially Vof said rod( 2. In combination with a reciprocatory rod, a stalling box about said rod, a packing between said box and rod and comprising rubber cups, each cup having a substantially thin flanged part engaging said rod, and metal rings between the adjacent cups and litt-ing thereinto, each metal packing. ring being weakened along `radial lines whereby the resilient cup will automatically expand or contract yas the metal ring isv moved into or out of the cup, said rings spaced from said cup at said 'flanged portions to provide a clearance thereat whereby signed my naine. v

A. GLENN PICKETT. 

